| Autor: |
Yoshimine, Isao, Tanaka, Yoshito Y., Shimura, Tsutomu, Satoh, Takuya |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
EPL (Europhysics Letters), 117, 67001 (2017) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1209/0295-5075/117/67001 |
| Popis: |
Unidirectional control of optically induced spin waves in a rare-earth iron garnet crystal is demonstrated. We observed the interference of two spin-wave packets with different initial phases generated by circularly polarized light pulses. This interference results in unidirectional propagation if the spin-wave sources are spaced apart at 1/4 of the wavelength of the spin waves and the initial phase difference is set to pi/2. The propagating direction of the spin wave is switched by the polarization helicity of the light pulses. Moreover, in a numerical simulation, applying more than two spin-wave sources with a suitable polarization and spot shape, arbitrary manipulation of the spin wave by the phased array method was replicated. |
| Databáze: |
arXiv |
| Externí odkaz: |
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